40 C.F.R. § 87.23

Current through October 31, 2024
Section 87.23 - Exhaust emission standards for Tier 6 and Tier 8 engines

Exhaust emission standards apply to new aircraft engines as follows:

(a) New turboprop aircraft engine standards apply as described in 40 CFR 1031.40 .
(b) New supersonic engine standards apply as described in 40 CFR 1031.90 .
(c) New subsonic turbofan or turbojet aircraft engine standards apply as follows:
(1) Standards for engines with rated output at or below 26.7 kN thrust apply as described in 40 CFR 1031.50 .
(2) Standards for engines with rated output above 26.7 kN thrust apply as described in 40 CFR 1031.60 .
(d) NOX standards apply based on the schedule for new type and in-production aircraft engines as described in 40 CFR 1031.60 .

40 C.F.R. §87.23

87 FR 72312 , 12/23/2022